Mary Christine Marshall, M.D.
Family Medicine Physician · Grand Blanc, MI
Mary Christine Marshall, M.D. is a family medicine physician with a practice address in Grand Blanc, Michigan, and NPI 1245320589, issued on Oct 16, 2006. Check the license (Michigan MM070680, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Mary Christine Marshall
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MM070680 MI
Self-reported in NPPES; status is on the state search - Practice location
- 8195 S Saginaw St, Grand Blanc, MI 48439
- Phone
- (810) 695-2210
- Enumerated
- Oct 16, 2006
- Record last updated
- Aug 10, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (810) 695-9530
- Medicaid ID
- 104238722 MI
- Medicare enrollment
- Enrolled (PECOS I20040412000015); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 1997
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Also registered at 8195 S Saginaw St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Lo, M.D.Specialist1164474490
Verify Mary Christine Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license MM070680Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% more Medicare Part D claims than the average family medicine physician in 2024
4,002 Medicare Part D claims for 256 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 111 claims were for opioids.
Most prescribed
- Levothyroxine Sodium303 claims
- Atorvastatin Calcium182 claims
- Lisinopril177 claims
- Simvastatin115 claims
- Losartan Potassium111 claims
- Eliquis107 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $17.14
1 payment: food and beverage; the largest payer was Exact Sciences Corporation. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mary Christine Marshall among 6,013 family medicine physician records in Michigan
Mary Christine Marshall, M.D. is one of 6,013 family medicine physician records with a practice address in Michigan. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 56% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1997 · median 2008 among the 3,493 with a school on file
- Record last updated2011 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
100 family medicine physician records list a practice address in Grand Blanc
They are 100 of the 1,735 NPPES records with a practice address in Grand Blanc, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Grand Blanc → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Thomas Bellinger, M.D.Grand Blanc, MI 484391457316655
- Larry Braver, D.O.Grand Blanc, MI 484391922028612
- Evtishios Daros, D.O.Grand Blanc, MI 484391316944333
- Antony Daros, DOGrand Blanc, MI 484391003800350
- James Forshee, M.D, MBAGrand Blanc, MI 484391427097591
- Manisha Kia, D.O.Grand Blanc, MI 484391780793893
- Uday Kunadi, MDGrand Blanc, MI 484391538191093
- Alexander Malayev, M.D.Grand Blanc, MI 484391992757645
Common questions
What is Mary Christine Marshall, M.D.'s NPI number?
Mary Christine Marshall, M.D.'s National Provider Identifier (NPI) is 1245320589, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Christine Marshall, M.D. located?
The NPPES record lists a practice address at 8195 S Saginaw St, Grand Blanc, MI, 48439. Phone: (810) 695-2210. Providers update this record themselves, so call before visiting.
How can I verify Mary Christine Marshall, M.D.'s license?
NPPES lists Michigan license number MM070680, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Christine Marshall, M.D. prescribe under Medicare Part D?
In 2024, Mary Christine Marshall, M.D. had 4,002 Medicare Part D claims for 256 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.